Using redis bloom filter with jedis driver

JedisBloomFilter.java

package net.icircuit.bf.redis;

import redis.clients.jedis.JedisPooled;

import java.util.List;
import java.util.Set;
import java.util.stream.IntStream;

import static java.util.stream.Collectors.toSet;

public class JedisBloomFilter {
    JedisPooled pool = new JedisPooled("localhost", 6379);

    /**
     * returns entries that were not present previously in the bloom filter and were added
     */
    public Set<String> put(String filterName, Set<String> entries) {
        final String[] entriesArr = entries.toArray(new String[0]);
        final List<Boolean> result = pool.bfMAdd(filterName, entriesArr);
        return IntStream.range(0, result.size())
                        .filter(result::get)
                        .mapToObj(index -> entriesArr[index])
                        .collect(toSet());
    }

    /**
     * returns entries that were present in the bloom filter
     */
    public Set<String> get(String filterName, Set<String> entries) {
        final String[] entriesArr = entries.toArray(new String[0]);
        final List<Boolean> result = pool.bfMExists(filterName, entriesArr);
        return IntStream.range(0, result.size())
                        .filter(result::get)
                        .mapToObj(index -> entriesArr[index])
                        .collect(toSet());
    }
}